单项选择题

"Someone is at the door"."________"

A．What is it
B．Who is it
C．Who is he
D．Which one is it
<上一题 目录 下一题>
热门 试题

单项选择题
The shutdown of the machine was due to its________ parts.
A．decayed
B．detective
C．deficient
D．spoiled
单项选择题
The guard walled through the train________ everyone's ticket.
A．inspecting
B．overlooking
C．reviewing
D．conducting
相关试题